Jordi Chias / Green turtle (Chelonia mydas) from underneath swimming through the surface, Mayotte Island, Comores, Indian Ocean.
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Michel Roggo / Brown bear (Ursus arctos beringianus) fishing for Sockeye salmon in the Ozernaya River, Kamtchatka, Russia, August
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Franco Banfi / Blue shark (Prionace glauca) viewed from below, with Snell's window effect, Pico Island, Azores, Portugal, Atlantic Ocean
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Floris van Breugel / Tiny thimble jellyfish (Linuche unguiculata) drift with the current in the calm turquiose waters of a lagoon in Ofu, American Samoa. The window of sky is called Snell's Window, caused by refraction of...
Alex Mustard / Lemon shark (Negaprion brevirostris) in snell's window. Grand Bahama. Bahamas. The Bahamas National Shark Sanctuary. Little Bahama Bank, West Atlantic Ocean.
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Alex Mustard / A marine iguana (Amblyrhynchus cristatus) silhouetted at the surface. Cape Douglas, Fernandina Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.
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Alex Mustard / Shallow, turquiose water and the surface, with blue sky. Raja Ampat, West Papua, Indonesia. Dampier Strait. Ceram Sea. Tropical West Pacific Ocean.
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Alex Mustard / RF - Green turtle (Chelonia mydas) framed in a Snell's window effect. Bunaken National Park. Bunaken Island, Manado, North Sulawesi, Indonesia. Sulawesi Sea. (This image may be licensed either as righ...
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Alex Mustard / RF - Banded tetras (Astyanax aeneus) swimming through a stand of Water lilies (Nymphaea mexicana) growing in a cenote (a freshwater sink hole) beneath trees. Carwash Cenote, Aktun Ha Cenote, Tulum, Q...
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Michel Roggo / Underwater view of African tigerfish (Hydrocynus vittatus), predatory fish in the Okavango river with Water lily (Nymphaea nouchali var. caerulea) and other aquatic plants. Okavango Delta, Botswana,...
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Michel Roggo / Etang de la Gruere, peat bog, with red tannin water, Rhine river catchment, Canton of Jura, Switzerland. November. Photographed for The Freshwater Project
